﻿// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.

using System.Collections;
using System.ComponentModel;
using System.ComponentModel.Design;
using System.Globalization;

namespace System.Windows.Forms.Design;

/// <summary>
/// Designer class for the MaskedTextBox control.
/// </summary>
internal class MaskedTextBoxDesigner : TextBoxBaseDesigner
{
    private DesignerVerbCollection? _verbs;
    private DesignerActionListCollection? _actions;

    // Overridden to avoid setting the default property ("Mask")
    // to the Site.Name (i.e. maskedTextBox1).
    protected override bool SetTextualDefaultProperty => false;

    /// <summary>
    /// MaskedTextBox designer action list property. Gets the design-time supported actions on the control.
    /// </summary>
    public override DesignerActionListCollection ActionLists
    {
        get
        {
            if (_actions is null)
            {
                _actions = new DesignerActionListCollection();
                _actions.Add(new MaskedTextBoxDesignerActionList(this));
            }

            return _actions;
        }
    }

    /// <summary>
    /// A utility method to get a design time masked text box based on the masked text box being designed.
    /// </summary>
    /// <param name="maskedTextBox">The masked text box.</param>
    /// <returns></returns>
    internal static MaskedTextBox GetDesignMaskedTextBox(MaskedTextBox maskedTextBox)
    {
        MaskedTextBox designMaskedTextBox;
        if (maskedTextBox is null)
        {
            // return a default control.
            designMaskedTextBox = new MaskedTextBox();
        }
        else
        {
            MaskedTextProvider? maskedTextProvider = maskedTextBox.MaskedTextProvider;

            if (maskedTextProvider is null)
            {
                designMaskedTextBox = new MaskedTextBox
                {
                    Text = maskedTextBox.Text
                };
            }
            else
            {
                designMaskedTextBox = new MaskedTextBox(maskedTextProvider);
            }

            // Clone MTB properties.
            designMaskedTextBox.ValidatingType = maskedTextBox.ValidatingType;
            designMaskedTextBox.BeepOnError = maskedTextBox.BeepOnError;
            designMaskedTextBox.InsertKeyMode = maskedTextBox.InsertKeyMode;
            designMaskedTextBox.RejectInputOnFirstFailure = maskedTextBox.RejectInputOnFirstFailure;
            designMaskedTextBox.CutCopyMaskFormat = maskedTextBox.CutCopyMaskFormat;
            designMaskedTextBox.Culture = maskedTextBox.Culture;
            // designMaskedTextBox.TextMaskFormat = maskedTextBox.TextMaskFormat; - Not relevant since it is to be used programmatically only.
        }

        // Some constant properties at design time.
        designMaskedTextBox.UseSystemPasswordChar = false;
        designMaskedTextBox.PasswordChar = '\0';
        designMaskedTextBox.ReadOnly = false;
        designMaskedTextBox.HidePromptOnLeave = false;

        return designMaskedTextBox;
    }

    internal static string GetMaskInputRejectedErrorMessage(MaskInputRejectedEventArgs e)
    {
        string rejectionHint;

        switch (e.RejectionHint)
        {
            case MaskedTextResultHint.AsciiCharacterExpected:
                rejectionHint = SR.MaskedTextBoxHintAsciiCharacterExpected;
                break;
            case MaskedTextResultHint.AlphanumericCharacterExpected:
                rejectionHint = SR.MaskedTextBoxHintAlphanumericCharacterExpected;
                break;
            case MaskedTextResultHint.DigitExpected:
                rejectionHint = SR.MaskedTextBoxHintDigitExpected;
                break;
            case MaskedTextResultHint.LetterExpected:
                rejectionHint = SR.MaskedTextBoxHintLetterExpected;
                break;
            case MaskedTextResultHint.SignedDigitExpected:
                rejectionHint = SR.MaskedTextBoxHintSignedDigitExpected;
                break;
            case MaskedTextResultHint.PromptCharNotAllowed:
                rejectionHint = SR.MaskedTextBoxHintPromptCharNotAllowed;
                break;
            case MaskedTextResultHint.UnavailableEditPosition:
                rejectionHint = SR.MaskedTextBoxHintUnavailableEditPosition;
                break;
            case MaskedTextResultHint.NonEditPosition:
                rejectionHint = SR.MaskedTextBoxHintNonEditPosition;
                break;
            case MaskedTextResultHint.PositionOutOfRange:
                rejectionHint = SR.MaskedTextBoxHintPositionOutOfRange;
                break;
            case MaskedTextResultHint.InvalidInput:
                rejectionHint = SR.MaskedTextBoxHintInvalidInput;
                break;
            case MaskedTextResultHint.Unknown:
            default:
                Debug.Fail("Unknown RejectionHint, defaulting to InvalidInput...");
                goto case MaskedTextResultHint.InvalidInput;
        }

        return string.Format(CultureInfo.CurrentCulture, SR.MaskedTextBoxTextEditorErrorFormatString, e.Position, rejectionHint);
    }

    /// <summary>
    /// Obsolete ComponentDesigner method which sets component default properties.  Overriden to avoid setting
    /// the Mask improperly.
    /// </summary>
    [Obsolete("This method has been deprecated. Use InitializeNewComponent instead.  https://go.microsoft.com/fwlink/?linkid=14202")]
    public override void OnSetComponentDefaults()
    {
        // do nothing.
    }

    /// <summary>
    ///  Event handler for the set mask verb.
    /// </summary>
    private void OnVerbSetMask(object? sender, EventArgs e)
    {
        MaskedTextBoxDesignerActionList actionList = new(this);
        actionList.SetMask();
    }

    /// <summary>
    ///  Allows a designer to filter the set of properties
    ///  the component it is designing will expose through the
    ///  TypeDescriptor object.  This method is called
    ///  immediately before its corresponding "Post" method.
    ///  If you are overriding this method you should call
    ///  the base implementation before you perform your own
    ///  filtering.
    /// </summary>
    protected override void PreFilterProperties(IDictionary properties)
    {
        base.PreFilterProperties(properties);

        string[] shadowProps =
        [
            "Text",
            "PasswordChar"
        ];

        Attribute[] empty = [];

        PropertyDescriptor? prop;
        for (int i = 0; i < shadowProps.Length; i++)
        {
            prop = (PropertyDescriptor?)properties[shadowProps[i]];
            if (prop is not null)
            {
                properties[shadowProps[i]] = TypeDescriptor.CreateProperty(typeof(MaskedTextBoxDesigner), prop, empty);
            }
        }
    }

    /// <summary>
    ///  Retrieves a set of rules concerning the movement capabilities of a component.
    ///  This should be one or more flags from the SelectionRules class.  If no designer
    ///  provides rules for a component, the component will not get any UI services.
    /// </summary>
    public override SelectionRules SelectionRules
    {
        get
        {
            SelectionRules rules = base.SelectionRules;
            rules &= ~(SelectionRules.TopSizeable | SelectionRules.BottomSizeable); // Height is fixed.
            return rules;
        }
    }

    /// <summary>
    ///  Shadows the PasswordChar.  UseSystemPasswordChar overrides PasswordChar so independent on the value
    ///  of PasswordChar it will return the system password char.  However, the value of PasswordChar is
    ///  cached so if UseSystemPasswordChar is reset at design time the PasswordChar value can be restored.
    ///  So in the case both properties are set, we need to serialize the real PasswordChar value as well.
    /// </summary>
    private char PasswordChar
    {
        get
        {
            MaskedTextBox? maskedTextBox = Control as MaskedTextBox;
            Debug.Assert(maskedTextBox is not null, "Designed control is not a MaskedTextBox.");

            if (maskedTextBox.UseSystemPasswordChar)
            {
                maskedTextBox.UseSystemPasswordChar = false;
                char pwdChar = maskedTextBox.PasswordChar;
                maskedTextBox.UseSystemPasswordChar = true;

                return pwdChar;
            }
            else
            {
                return maskedTextBox.PasswordChar;
            }
        }
        set
        {
            MaskedTextBox? maskedTextBox = Control as MaskedTextBox;
            Debug.Assert(maskedTextBox is not null, "Designed control is not a MaskedTextBox.");

            maskedTextBox.PasswordChar = value;
        }
    }

    /// <summary>
    ///  Shadow the Text property to do two things:
    ///  1. Always show the text without prompt or literals.
    ///  2. The text from the UITypeEditor is assigned escaping literals, prompt and spaces, this is to allow for partial inputs.
    ///  Observe that if the MTB is hooked to a PropertyBrowser at design time, shadowing of the property won't work unless the
    ///  application is a well written control designer (implements corresponding interfaces).
    /// </summary>
    private string? Text
    {
        get
        {
            // Return text w/o literals or prompt.
            MaskedTextBox? maskedTextBox = Control as MaskedTextBox;
            Debug.Assert(maskedTextBox is not null, "Designed control is not a MaskedTextBox.");

            // Text w/o prompt or literals.
            if (string.IsNullOrEmpty(maskedTextBox.Mask))
            {
                return maskedTextBox.Text;
            }

            return maskedTextBox.MaskedTextProvider?.ToString(includePrompt: false, includeLiterals: false);
        }
        set
        {
            MaskedTextBox? maskedTextBox = Control as MaskedTextBox;
            Debug.Assert(maskedTextBox is not null, "Designed control is not a MaskedTextBox.");

            if (string.IsNullOrEmpty(maskedTextBox.Mask))
            {
                maskedTextBox.Text = value;
            }
            else
            {
                bool ResetOnSpace = maskedTextBox.ResetOnSpace;
                bool ResetOnPrompt = maskedTextBox.ResetOnPrompt;
                bool SkipLiterals = maskedTextBox.SkipLiterals;

                maskedTextBox.ResetOnSpace = true;
                maskedTextBox.ResetOnPrompt = true;
                maskedTextBox.SkipLiterals = true;

                // Value is expected to contain literals and prompt.
                maskedTextBox.Text = value;

                maskedTextBox.ResetOnSpace = ResetOnSpace;
                maskedTextBox.ResetOnPrompt = ResetOnPrompt;
                maskedTextBox.SkipLiterals = SkipLiterals;
            }
        }
    }

    /// <summary>
    ///  MaskedTextBox designer verb collection property.  Gets the design-time supported verbs of the control.
    /// </summary>
    public override DesignerVerbCollection Verbs
    {
        get
        {
            if (_verbs is null)
            {
                _verbs = new DesignerVerbCollection();
                _verbs.Add(new DesignerVerb(SR.MaskedTextBoxDesignerVerbsSetMaskDesc, new EventHandler(OnVerbSetMask)));
            }

            return _verbs;
        }
    }
}
